The introduction of the euro generated substantial interest in measuring the impact of currency unions (CUs) on trade flows. Rose’s (2000) initial estimates suggested a tripling of trade and created a literature in search of “more reasonable” CU effects. A recent meta-analysis of this...

The literature measuring the impact of Preferential Trade Agreements (PTA) and WTO membership on trade flows has produced remarkably diverse results. Rose’s (2004) seminal paper reports a range of specifications that show no WTO effects, but Subramanian and Wei (2007) contend that he does not...